This returns the tagname for this end-token object.
For example, parsing a "=head1 ..." line will give you
a start-token with the tagname of "head1", token(s) for its
content, and then an end-token with the tagname of "head1".

$token->tagname(somestring)

This changes the tagname for this end-token object.
You probably won't need to do this.

$token->tag(...)

A shortcut for $token->tagname(...)

$token->is_tag(somestring) or $token->is_tagname(somestring)

These are shortcuts for $token->tag() eq somestring

You're unlikely to ever need to construct an object of this class for
yourself, but if you want to, call
Pod::Simple::PullParserEndToken->new( tagname )